The LUMIERE project focuses on unraveling the ultrafast dynamics of molecular processes in liquid environments through groundbreaking time-resolved spectroscopy. By studying biomimetic photo-switches—molecular systems inspired by nature—the research seeks to deepen our understanding of how light interacts with matter on the femtosecond scale. These insights pave the way for advancements in renewable energy, biomolecular design, and sustainable technologies.
Ultrafast Dynamics and Techniques
At the heart of LUMIERE lies the application of advanced ultrafast spectroscopic techniques, such as:
- Time-Resolved Photoelectron Spectroscopy (TRPES): Capturing molecular changes in real time to study electronic transitions.
- Transient Absorption Spectroscopy: Examining how molecules absorb and emit light across various phases.
- Computational Modeling: Simulating molecular dynamics to complement experimental observations and predict behaviors in new environments.
These methods enable scientists to probe the rapid, nonadiabatic processes that govern molecular reactivity and energy flow.
Biomimetic Molecular Switches
LUMIERE is pushing the boundaries of photochemistry by developing and studying biomimetic photo-switches—molecules that mimic natural processes like photosynthesis or retinal photoisomerization. These switches are designed to:
- Exhibit light-induced transformations with high efficiency
- Be tunable for diverse applications, from drug delivery to molecular electronics
- Reveal how environmental factors, such as solvent polarity and temperature, influence their performance
Bridging Experiment and Theory
The project integrates experimental and computational approaches to achieve unprecedented insight into molecular behavior:
- Experimental Innovations: The development of novel liquid-jet systems and high-harmonic-generation laser sources allows for precise, environment-specific studies.
- Theoretical Breakthroughs: Advanced QM/MM (quantum mechanics/molecular mechanics) techniques and ab initio modeling enable simulations that align closely with experimental data.
- Interdisciplinary Synergy: Collaboration across chemistry, physics, and materials science ensures a comprehensive understanding of light-driven molecular mechanisms.
